硅胶负载型茂金属催化剂催化乙烯聚合效率研究  

Study on effieiency of silica gel-supported metallocene catalyst in ethylene polymerization

作　　者：王雄 张鹏[1] 刘文霞 姚培洪 

机构地区：[1]中国石油兰州化工研究中心,甘肃兰州730060

出　　处：《石化技术与应用》2011年第4期337-339,345,共4页Petrochemical Technology & Application

摘　　要：研究了影响硅胶负载型茂金属催化剂(双(1-丁基-3-甲基环异戊二烯基)二氯化锆/甲基铝氧烷)催化乙烯聚合效率的因素,讨论了硅胶颗粒的比表面积、负载温度、铝及锆的负载量对催化效率的影响。结果表明,硅胶的比表面积增大时催化效率提高;负载温度为-20℃,负载锆质量分数约为0.5%,负载铝质量分数约为17%时,负载型茂金属催化剂催化乙烯聚合的催化效率达到最佳状态。The factors of influencing catalyst efficiency of silica gel-supported metallocene catalyst of（1-Bu-3-MeCp）2ZrCl2/methylaluminoxane（MAO） was studied.The effects of SiO2 average specific area,supporting temperature,the supporting level of MAO and（1-Bu-3-MeCp）2ZrCl2 on catalyst efficiency were discussed.The results showed that catalyst efficiency increased as the specific surface area of SiO2 increased,and that optimal catalytic efficiency was obtained at about 0.5% of Zr mass fraction and 17% of Al mass fraction,about-20℃ of supporting temperature.

关 键 词：茂金属催化剂 聚乙烯 硅胶 催化效率 负载催化剂 

分 类 号：TQ314.242[化学工程—高聚物工业] TQ325.12